When listed on a major exchange, such as the NYSE or Nasdaq, the companies and their stock have to meet several listing requirements on stock price, trading volume, capitalization, disclosure of material information or financial reporting. More ...

Insider trading is the buying or selling of shares of a company by someone who has access to material, non-public information on the company.
Legal insider trading is when company insiders - officers, directors, employees and 10% owners - buy or sell shares in their company in accordance with securities laws and regulations. More ...